include/hw/display/dm163.h

   1 /*
   2  * QEMU DM163 8x3-channel constant current led driver
   3  * driving columns of associated 8x8 RGB matrix.
   4  *
   5  * Copyright (C) 2024 Samuel Tardieu <sam@rfc1149.net>
   6  * Copyright (C) 2024 Arnaud Minier <arnaud.minier@telecom-paris.fr>
   7  * Copyright (C) 2024 Inès Varhol <ines.varhol@telecom-paris.fr>
   8  *
   9  * SPDX-License-Identifier: GPL-2.0-or-later
  10  */
  11
  12 #ifndef HW_DISPLAY_DM163_H
  13 #define HW_DISPLAY_DM163_H
  14
  15 #include "qom/object.h"
  16 #include "hw/qdev-core.h"
  17
  18 #define TYPE_DM163 "dm163"
  19 OBJECT_DECLARE_SIMPLE_TYPE(DM163State, DM163);
  20
  21 #define RGB_MATRIX_NUM_ROWS 8
  22 #define RGB_MATRIX_NUM_COLS 8
  23 #define DM163_NUM_LEDS (RGB_MATRIX_NUM_COLS * 3)
  24 /* The last row is filled with 0 (turned off row) */
  25 #define COLOR_BUFFER_SIZE (RGB_MATRIX_NUM_ROWS + 1)
  26
  27 typedef struct DM163State {
  28     DeviceState parent_obj;
  29
  30     /* DM163 driver */
  31     uint64_t bank0_shift_register[3];
  32     uint64_t bank1_shift_register[3];
  33     uint16_t latched_outputs[DM163_NUM_LEDS];
  34     uint16_t outputs[DM163_NUM_LEDS];
  35     qemu_irq sout;
  36
  37     uint8_t sin;
  38     uint8_t dck;
  39     uint8_t rst_b;
  40     uint8_t lat_b;
  41     uint8_t selbk;
  42     uint8_t en_b;
  43
  44     /* IM120417002 colors shield */
  45     uint8_t activated_rows;
  46
  47     /* 8x8 RGB matrix */
  48     QemuConsole *console;
  49     uint8_t redraw;
  50     /* Rows currently being displayed on the matrix. */
  51     /* The last row is filled with 0 (turned off row) */
  52     uint32_t buffer[COLOR_BUFFER_SIZE][RGB_MATRIX_NUM_COLS];
  53     uint8_t last_buffer_idx;
  54     uint8_t buffer_idx_of_row[RGB_MATRIX_NUM_ROWS];
  55     /* Used to simulate retinal persistence of rows */
  56     uint8_t row_persistence_delay[RGB_MATRIX_NUM_ROWS];
  57 } DM163State;
  58
  59 #endif /* HW_DISPLAY_DM163_H */